Sucker-rod coupling.



PATENTED MAY 1, 1906.

y w w m {MM/4 /MM 40% L. GHRONINGER.

SUGKER ROD COUPLING.

LEONARD OHRONINGER, OF FINDLAY, OHIO.

SUCKER-ROD COUPLING.

Specification of Letters Patent.

Patented May 1, 1906.

Application filed December 13, 1905. Serial No. 291,540.

To m/Z II l/U'Hb it Duty concern:

Be it known that I, LEONARD CHRONINGER, a citizen of the United States of America, residing at Findlay, in the county of Hancock and State of Ohio, have invented certain new tIlCl useful Improvements in Sucker- Rod louplings, of which the following is a speciication.

This invention relates to new and useful nprovemcnts in sucker-rod couplings; and is the intention of the invention to provide 10V6l device of this character that will be few parts and easily assembled. It is a further object of the invention to ,n'esn'de a novel device of this kind that will not only be simple in construction, but efficient in practice and economical to manu facture.

With the foregoing and other objects in view the invention consists in the details of (onstruction and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

1 In describing the invention in detail refer- 25 ence will be had to the accompanyingdrawings, forming part of this specification, wherein like characters denote corresponding parts in both the views, in which- Figure 1 is a view in elevation of the coupling applied. Fig. 2 is a longitudinal section of Fig. 1.

In the drawings, 10 denote portions of sucker-rods having their end ports 11 11 threaded to engage the coupling. The coup- 3 5 ling comprises two sections 12 13, each having a central bore 14:, the inner ends of which are threaded. The sucker-rods fit within the bore of the sections, and the threaded parts 11 11 of the rods are intended to engage the threads 15 of the bores of the sections. By having the rods extend a distance within the sections before engaging the threads a device is presented that will protect the v threads from breaking off, a feature most csscntial in a device of this character, as has been conclusively proven in practice. The bore of the section 13 communicates with an internally-threaded female socket 16, which is engaged by the threaded male member 17 on the section 12. The edge of the socket 16 is intended to abut an annular shoulder 18, formed on the section 12 at the base of the male member 17. An annular recess 19 is formed in the edge of the socket and is intended to provide means whereby suitable packing may be applied to protect the threaded engagement of the sections from moisture.

The oper tion or application of the invention is thought to be clearly apparent to those skilled in the art, it being stated that any mechanical means may be applied in assembling the sections or in connecting the sections to the rods. I11 order to facilitate the assemblage of the parts, the sections are each provided with an angular portion 20 for the reception of any suitable tool or instrument.

Although the invention has been describe as applied to a sucker-rod coupling, mention may be made of the fact that it might be used with equal success for valve-stems and polish-rod connections, or, in other words, by this device polish-rods can be connected to the sucker-rods at the top of the well or the sucker-rod can be coupled to the valve-stem at the bottom of the well, as will be readily appreciated by those familiar with this class of invention. Attention is also directed to the fact that the socket 16 is greater in depth than the length of the male member 17. This is to permit for the compensation of wear and also to allow the section 13 to bind against the shoulder 18 to effect a tighter joint.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

A coupling for rods formed in sections,each of said sections having a bore for the reception of a rod, one of said sections having a female member, a male member on the remaining section engaging the female member, and a shoulder on the second-named section against which the first-named section is intended to abut, said first-named section having an annular recess in its abutting edge.

In testimony whereof I affix my signature in the presence of two witnesses this 11th day of September, 1905.

LEONARD OIIRONINGER.

WVitnesses:

T. GLEN CARPENTER, WVILLIAM L. DAVID. 

